Syringe



(No Model.)

D. MoNAUGI-ITON. SYRINGE.

No. 400,586. Patented Apr. 2, 1889.

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UNITED STATES PATENT OFFICE.

DANIEL C MoNAUGI-ITON, OF JERSEY CITY, NEW JERSEY.

SYRINGE.

SPECIFICATION forming part of Letters Patent No. 400,586, dated April '2, 1889.

Application filed September S, 188th Serial No 284,445- @To model.)

' TON, a citizen of the United States, residing at Jersey City, in the county of Hudson and State of New Jersey, have invented certain (new and useful Improvements in Syringes, of

which the following is such a full, clear, and exact description as will enable any one skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to a flexible-bulb syringe having the nozzle thereof provided with a steadying piece or extension lying within the-bulb and secured thereto for steadying the syringe -nozzle when the bulb is compressed or expanded, and having a storing receptacle or reservoir located within the bulb and constituting, preferably, the steadyingpiece for the nozzle, and designed to serve as a receptacle or bottle to keep a powder or a concentrated liquid in.

The invention is especially applicable to a dental syringe, which is used to force liquids between the teeth to wash the food out or to place a drop of tinctureon a certainpart' of a tooth.

The advantages of the invention are that the syringe-nozzle may be maintained in its true axial alignment with the bulb, which will be prevented from collapsing longitudinall y when the same is operated, so thatin dropping tinctures or liquids the same maybe directed to a definite spot with much certainty, and that a concentrated tooth-wash solution or powder may be carried in a receptacle housed completely Within the bulb,to be drawn from at will.

In order that my invention may be fully understood, I have illustrated in the accompanying drawings and will proceed to describe the best form thereof so far devised by me, with the knowledge, however, that the form shown will admit of various modifications being made. therein'without making a substantial departure from the spirit of the invention, as herein set forth and claimed.

In the accompanying drawings, illustrating my invention, Figure 1 is a central sectional view taken through the longitudinal axis of the syringe, with part of the nozzle shown in In the said drawings like numbers of ref- I erence design ate like and corresponding parts throughout.

Referring to the drawings, 4 designates a flexible bulb, made, for instance, of soft rubher, and which is provided with the openings 5 and 6, arranged in axial alignment. The syringe-nozzle 7 is a closed tube having a contracted outer end and extending through the opening 5 into the interior of the bulb, where it is provided with an extension, 9, which is secured by its end to the bulb, preferably, by

taking into the opening 6, formed in one end thereof. The nozzle is in communication with the interior of the bulb through means of the opening 8, so that the liquid may be drawn into the bulb through the nozzle and then ejected therefrom through the same.

In Fig. 1, 7 9 is a tube, which may be made of a suitable material-such as metal, glass, or vulcanized rubberandis formed with the perforation or opening 8 in the side thereof, which communicates with the interior of the bulb, and as it is necessary to have the tube closed back of the opening 8 this may be done by either contracting the tube at a point such as 10-in order to close the channel thereof, or by closing up the extreme rear end of the tube by fusing the glass, or in any other suitable way, in which case, of course, the rear end of the tube could not be used as a bottle, as hereinafter described.

In the construction shown in Fig. 2 the steadying piece or extension 9, of the nozzle is a separate piece therefrom, and consists, preferably, of a solid body, with one end taking into the opening 6 of the bulb, and with the other end tapered and cut away, as at 11, as will be understood from Fig. 3, and inserted within the inner end of the nozzle 7, so as to leave an opening, 8, in communicationbetween the interior of the bulb and the nozzle. Instead of a single groove, as 11, there may be formed several of the same in the end of the piece 9 lying within the'nozzle. This piece 9 may be made of wood or hard rubber or any preferred material that will stand the stress it will be likely to receive in compressing the bulb. This form may be used in preference to that shown in Fig. 1, because the latter, when made entirely of glass, is more fragile and not so serviceable. The nozzle 7 and the extension 9 fit into their respective openings 5 and 6 to such a nicety as to prevent leakage in using the syringe.

In Fig. 1 the extension or steadying piece 9 is formed, like a vial or small bottle, with the stopper 12 closing the mouth thereof. This will serve as a most convenient and handy place for storing a tincture or a concentrated solution or tooth-powder, which may be readily taken from the same by removing the stopper 12 in a manner that is obvious. The contraction l0 acts as the bottom of the storagebottle 9 and also the closed end of the nozzle 7. If preferred, the tube out of which this combined bottle and nozzle is constructed need not be contracted, as at 10; but instead a diaphragm may obviously be inserted within the tube to divide it into the nozzle and bottle. This storage-bottle 9 in no wise adds to the dimensions of the syringe and performs the several functions of a steadying-pieee and a bottle. The bottle and nozzle may of course be made of separate pieces; but this will not make such a compact and neat arrangement.

The operations of the device are quite manifest. The liquid is introduced into the bulb 4 by compressing the empty bulb and dipping the nozzle into the liquid, then relieving the bulb of the pressure, whereupon the same will suck in the liquid, which then may be forced out through the nozzle 7 by again compressing the bulb. Throughout this action the nozzle will be maintained in its true axial position relative to the longitudinal axis of the bulb, and will be prevented from webbling, and the bulb itself will be prevented from collapsing endwise, so that the liquid may be directed with accuracy as it is ejected from the nozzle. The concentrated solution is to be stored within the bottle 9, so as to be readily drawn therefrom to make a dilute solution for use with the syringe.

I do not confine myself to the exact form and construction shown, since the scope of the invention will permit of considerable modification in the details thereof.

If preferred, it will be possible to have the partition 10, which separates the nozzle from the bottle, porous, so that the liquid contained within the bottle may gradually pass through such partition and mix with the liquid drawn into the bulb, thereby forming the desired dilute solution.

Having thus described my improvements in syringes, what I claim as my invention, and desire to secure by Letters Patent, is'

1. A syringe having disposed therein a stor age bottle or receptacle communicating solely with the exterior of the syringe, and in which a substance may be stored and from which it may be drawn, substantially as and for the purpose set forth. 1

2. The combination, with a flexible bulb, of a tube extending through the bulb and having a partition dividing the tube into a bottle and a nozzle, the bottle provided with a stopper and the nozzle communicating with the interior of the bulb, substantially as and for the purpose set forth.

3. The combination, with the flexible bulb 4, having the opening 5 for the nozzle, of the nozzle 7, extending through the opening 5, and formed with the opening 8, communicating with the interior of the bulb, and provided with the extension 9, which is attached to the bulb and acts to steady the nozzle under the compression and expansion of the bulb, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand and seal, this 17th day of August, 1888, in the presence of two subscribing witnesses.

DANIEL C. MCNAUGHTON.

\Vit-nesses: I

'AND. J. PROVOST, WILLIS FOWLER. 

